Can humans undo the worst effects of climate change by embarking on a vast geoengineering experiment? And even if we can, should we?
A Climeworks plant near Zurich, Switzerland, filters carbon dioxide from the air and supplies it to a greenhouse where it's used to grow vegetables. It's one of several geoengineering technologies being considered to help reverse global warming.
. “The climatic changes that may be produced,” he warned, “could be deleterious from the point of view of human beings.”What Revelle suggested next kicked off a debate that continues to this day: Can humans avert the worst effects of climate change with a vast geoengineering experiment? Over the intervening decades, the idea of geoengineering Earth’s climate has only grown more controversial.is to rapidly reduce emissions of carbon dioxide and other greenhouse gases by transitioning to clean energy sources. But scientists and policymakers are deeply divided over which forms of geoengineering also deserve serious consideration — and when the world might want to use them.to commission a report on the subject, because even studying it is contentious.
Many questions revolve around scientific uncertainties and economic arguments. But the debate also taps into thorny philosophical questions:
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